CVE-2026-80987

In the Linux kernel, the following vulnerability has been resolved: NTB: ntb_transport: Reject oversized TX buffers ntb_process_tx() handles an oversized buffer by calling tx_handler() with a NULL data pointer and returning success. ntb_netdev therefore neither frees the skb in its completion callback nor takes its enqueue error path, leaking it. Reject oversized buffers in ntb_transport_tx_enqueue() before acquiring a queue entry and return -EMSGSIZE. The caller retains ownership of the buffer, and the preceding netdev patch frees the skb when enqueue returns this permanent error.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4890152a3069f5cb58cc24b08cfd5fe95e568fa1
https://git.kernel.org/stable/c/668aa3238548584ca9772da9cf43ae8c2389bbf1
https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0
https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd
https://git.kernel.org/stable/c/9b0fa8a9e1057614a533cc3f18b17f82aab028d8
https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7
https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87
https://git.kernel.org/stable/c/b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:18

NVD link : CVE-2026-80987

Mitre link : CVE-2026-80987

CVE.ORG link : CVE-2026-80987

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The caller retains ownership of the\nbuffer, and the preceding netdev patch frees the skb when enqueue\nreturns this permanent error."}], "lastModified": "2026-09-14T13:18:53.343", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}